it's back, but not for long. [ woman ] our guests go crazy for lobsterfest. my favorite entree is the lobster lover's dream. what's yours? come celebrate lobsterfest and sea food differently. >>> the plan of the b612 foundation is going to orbit the sun. this is the sentinel space telescope. >> that's basically the size of it there? >> yeah, the real one is about the size of say a delivery truck, so it's about 23, 24 feet tall, and about 2,600 pounds. >> it's got its back to the moon? >> back to the sun. >> back to the sun and constantly surveying everything around it. >> exactly. as you know it's hard to look with a telescope in the direction of the sun. the nighttime sky is in the opposite direction of the sun. the challenging thing about the sentinel mission is that it's going to be quite far away from earth. it will orbit the sun so that means its distance will vary from the earth but it will range between 30 million miles at its closest to 170 million miles away from earth at its furthest. that's about 500,000 times further from earth than the hubble spa